|
Match
|
Document |
Document Title |
|
|
7626836 |
Method and apparatus for adjustable voltage/adjustable frequency inverter control
An apparatus and method for controlling an inverter, the apparatus including an adjustable frequency controller receiving a reference frequency value and generating a command frequency value as a...
|
|
|
7622877 |
Method and system for controlling permanent magnet AC machines
Methods and systems are provided for controlling permanent magnet machines under varying loads. The method comprises generating a d-axis voltage command and a q-axis voltage command, producing a...
|
|
|
7622884 |
Methods for managing electrical power
Certain exemplary embodiments comprise a system comprising a plurality of Active Front End units adapted to be electrically coupled to a direct current (DC) bus. Each of the plurality of Active...
|
|
|
7616466 |
Three phase inverter with improved loss distribution
An inverter circuit couples a DC voltage source having a primary side and a reference side to an electric motor or other AC machine having multiple electrical phases. An inverter circuit includes...
|
|
|
7615943 |
Control apparatus and method for electric vehicles
In electric vehicle control, system voltage stabilization control is executed to reduce the difference between a target value and detected value of a system voltage generated by a voltage boosting...
|
|
|
7612518 |
Inverter apparatus and method of reducing speed of alternating current motor
There is provided an inverter capable of reducing a speed in a short period of time without generating an overcurrent even in a case of an alternating current motor which is easy to be saturated...
|
|
|
7609023 |
Control apparatus for electric vehicles
In electric vehicle control, system voltage stabilization control is executed to reduce the difference between a target value and detected value of a system voltage generated by a voltage boosting...
|
|
|
7609022 |
Power supply system for vehicle with improved energy efficiency and vehicle including the same
A matrix converter ( 38 ) converts three-phase AC power input from a first motor-generator (MG 1 ) directly to three-phase AC power for driving a second motor-generator (MG 2 ) and outputs the...
|
|
|
7598698 |
Motor control device
A motor control device includes a current detecting portion that detects phase current of one phase among three phase currents supplied from an inverter to a motor, and a current estimator that...
|
|
|
7595604 |
Motor control device
Let the rotating axis whose direction coincides with the direction of the current vector that achieves maximum torque control be called the qm-axis, and the rotating axis perpendicular to the...
|
|
|
7589481 |
Control device integrated dynamo-electric machine
In order to improve reliability, cost performance, and cooling property, a control device integrated dynamo-electric machine mounted to a dynamo-electric machine includes an inverter bridge...
|
|
|
7583047 |
Quenching device for a converter bridge with line regeneration
There is described a method for controlling a quenching device for a converter bridge with line regeneration, whereby the converter bridge controlled by a network-timed control circuit by ignition...
|
|
|
7579795 |
Brushless-motor driving control device, image reading apparatus, and image forming apparatus
A drive control device for a brushless motor having a rotor and a plurality of coils with different phases can be included in an image reading apparatus or an image forming apparatus. The drive...
|
|
|
7579792 |
Hybrid motor boost system and methods
An electrical system for a vehicle includes a power source providing electrical power to a first and a second electrical motor. Each motor has two or more windings, and each winding has a first end...
|
|
|
7573227 |
Controller and control method of permanent magnet type rotary motor
A controller of a permanent magnet type rotary motor of the present invention includes: a current difference calculator decomposing a primary voltage difference which is a difference between a...
|
|
|
7570000 |
Control drive circuit for electric power tool
In a control drive circuit for an electric power tool, a bridge-structured motor, which has a bridge structure and includes switching elements and a motor body, is connected to a power supply unit...
|
|
|
7567053 |
Mechatronic integration of motor drive and E-machine, especially smart-E-motor
The power switches of an inverter are mechanically integrated with an electric motor of a vehicle and are mounted on the end plate of the motor and employ short connections between the motor a-c...
|
|
|
7567046 |
Motor-driving apparatus
An object of the present invention to accurately and reliably detect rotational positions of a rotor irrespective of noise overlapping inductor voltage. Employed for accomplishing the...
|
|
|
7548038 |
Controller for motor
A controller for a motor is capable of reducing the amount of energization required to operate a motor under a predetermined condition, the motor having two rotors disposed around a rotating shaft....
|
|
|
7545116 |
Driver for induction motor and method of driving the same
An object of the present invention is to provide a driver for an induction motor which performs an operation at an acceleration suitable for the magnitude of a load and is excellent in efficiency,...
|
|
|
7541769 |
Electric power converter and motor driving system
An electric power converter which has improved accuracy in compensation of a dead time. A motor driving system employing the electric power converter is also provided. A power module includes a...
|
|
|
7528569 |
Inverter circuit free from power-source-voltage fluctuation
An inverter circuit includes a bridge circuit constituted of a plurality of pairs of a high-side switching element and a low-side switching element, a command signal processing section, a pulse...
|
|
|
7521888 |
Electric motor controller for a domestic appliance
The invention relates to a three-phase asynchronous electric motor for domestic appliances, comprising power elements, such as triacs or relays, for charge control. The power elements other than...
|
|
|
7511450 |
Frequency converter, motor, motor drive system and maintenance method for motor drive system
A frequency converter for outputting a power to drive a motor, having: an inverter unit for inverting a d.c. power to an a.c. power; a control unit for controlling the inverter unit; and a housing...
|
|
|
7511447 |
Motor drive apparatus
When a torque command value from an external ECU is within a predetermined variation width, a control unit generates a signal and outputs the signal to a voltage command calculation unit so that...
|
|
|
7508160 |
Soft start system for motors utilizing variable frequency drive and autotransformer
A soft start system for starting large motors has a power supply suitable for passing power to the motor, a variable frequency drive connected to the power supply and an autotransformer connected...
|
|
|
7508147 |
Variable-frequency drive with regeneration capability
An electrical device includes a plurality of single-phase power cells electrically connected to receive power from a source and deliver power to a load. The single-phase power cells include a first...
|
|
|
7504796 |
Inverter device
A running pattern of one cycle in a preset industrial machine is observed by a current detector and a temperature rise value estimating unit that are additionally provided in a traditional inverter...
|
|
|
7495411 |
Controller for an electric four-wheel-drive vehicle
An object of the present invention is to provide a controller for an electric four-wheel-drive vehicle, which is capable of minimizing torque changes and consuming excessive power even when the...
|
|
|
7495410 |
Systems and methods for improved motor drive power factor control
Systems and methods are described for controlling power factor in motor drives having a switching rectifier providing a DC link current to an inverter in which the rectifier gain is increased to...
|
|
|
7468588 |
Apparatus and method for controlling operation of reciprocating compressor
The present invention relates to an apparatus and method for controlling operation of a reciprocating compressor. The operating efficiency of the compressor can be improved by performing the steps...
|
|
|
7468595 |
System and method of controlling the start-up of an adjustable speed motor drive based sinusoidal output power conditioner
A motor drive for conditioning power to be delivered to a load includes a current feedback circuit that monitors current being fed to a transformer connected between the motor drive and the load....
|
|
|
7466906 |
Motor control apparatus
A motor control apparatus includes a target value computation device which computes a target value of a current to be passed through a motor, a current detection device which detects a current...
|
|
|
7456602 |
System and method of commonly controlling power converters
A system and method for controlling power converters are disclosed. Briefly described, one embodiment is a method comprising communicating at least one first control signal to an alternating...
|
|
|
7456600 |
Pulse code width modulation motor drive system
A detailed architectural and operational characteristic of a pulse code width modulation (PCWM) motor drive system is presented. The system can drive a three phase permanent magnet AC (PMAC) motor...
|
|
|
7453231 |
Electric vehicle control device
An object of the present invention is to provide an electric vehicle control device which is capable of detecting even a state in which only one phase of one induction motor is disconnected in a...
|
|
|
7449859 |
Reduction of subharmonic oscillation at high frequency operation of a power inverter
A control architecture for an electrical inverter includes a synchronous frame current regulator and a stationary frame current regulator. The stationary frame current regulator receives input...
|
|
|
7443128 |
Method and device for controlling motors
An electronic device is provided for controlling a motor having three phases driven by a motor driver. In one implementation, the electronic device includes a detection means and a control circuit....
|
|
|
7443129 |
Quenching device for a converter bridge with line regeneration
There is described a method for controlling a quenching device for a converter bridge with line regeneration, whereby the converter bridge controlled by a network-timed control circuit by ignition...
|
|
|
7439704 |
Inverter device and inverter module
An object is to provide an inverter device capable of detecting the welding of a switching device in early stages, and in summary, the inverter device is equipped with a parallel circuit of a...
|
|
|
7432683 |
PWM pattern sequence to reduce losses in voltage source inverters
A method for controlling an inverter uses sequences of predetermined states where each state uniquely corresponding to a set of control signals provided to the inverter that is coupled to a motor....
|
|
|
7432678 |
Motor driving apparatus and control method thereof
A motor driving apparatus includes a speed control circuit for outputting a speed control signal on the basis of a target speed command and rotating speed information of a motor, a PWM signal...
|
|
|
7427849 |
Controller for an electric vehicle and driving apparatus for the electric vehicle
The present invention provides a controller and driving apparatus for an electric vehicle, which enables a motor to steadily output torque even when there is an increase in the rotation speed of an...
|
|
|
7425806 |
System and method for controlling a variable speed drive
A variable speed drive is provided having a converter to convert an AC voltage to a DC voltage, a DC link to filter and store energy from the converter, and a plurality of inverters. Each inverter...
|
|
|
7423401 |
AC rotary machine constant measuring apparatus for measuring constants of stationary AC rotary machine
In an apparatus measuring constants of an induction motor, an inverter converts an inputted voltage command signal into a single-phase AC power and feeds the single-phase AC power to the induction...
|
|
|
7417393 |
Load driver capable of suppressing overcurrent
A control device determines whether a motor generator is controlled in a PWM control mode, an overmodulation control mode or a rectangular-wave control mode. If a command to perform a boosting...
|
|
|
7417842 |
Apparatus for power conversion in electric rolling stock
An apparatus for electric power conversion in an electric rolling stock, comprising an inverter which receives a DC power fed from a DC power source at DC terminals, converts the received DC power...
|
|
|
7411801 |
Method and apparatus for controlling voltage linearity of voltage source inverters
Methods and apparatus are provided for modifying a pulse width modulation signal controlling a voltage source inverter. The method comprises the steps of determining a duty cycle of the signal,...
|
|
|
7411369 |
Phase current detection method, inverter control method, motor control method and apparatus for carrying out these methods
Apparatus and methods for phase current detection used for driving a motor by supplying outputs from a pulse width modulation (PWM) converter to the motor. One method presented provides detecting a...
|
|
|
7405534 |
Apparatus and method for controlling velocity of motor
An apparatus controlling a velocity of a motor having a rotor, includes a sensing velocity calculator sensing a rotation velocity of the motor, and calculating a sensing velocity on the basis of...
|